Sanitary sump pump



June 11, 1957 D. c. LINSCOTT 2,795,193

SANITARY SUMP PUMP I Filed Sept. 15, 1954 IN VEN TOR.

OUR/IND C Z/IV- COTT BY 7% cm ATTORNEY.

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United States Patent 2,795,193 SANITARY SUMP= PUMP Durand C..Linsco.tt, Wichita, Kans.

'Application September15,1954, Serial No.;456,176 1 2 Claims. v c1. 103-93 My invention relates to an improvement in small sanitary sump pumps, that are suitable for use in small homes or in apartment houses having a small number of apartments, say two, four, six or some such small number of apartments therein.

In homes or small apartment houses as above-mentioned it frequently happens that the basement floor of the-building is below the city sewer level and'therefor'e it is impossible to pour drainage such as from a water closet or other plumbing fixtures in thebasementinto-the city sewer without first elevating the sewage from thelevel of the basement floor to a point above the s'ewer'levehso that the sewagecan be drained into the sewer and this,-of course requires some kind-of a pump that will'elevate the sewage as above mentioned.

Therehave been numerous'pumpsrnade for-the purpose of elevating sewage up to and above the sewer line'but all of these pumps are large and have been made for large installations such as hotels, business and factory buildings and the like where relatively large amounts of sewage is to be handled and disposed of and these large installations 'are not practical for use in homes,small apartment houses and the like as above mentioned, therefore 'I.hav'e provided my improved small sanitary sump purnp'for use in homes, small apartment houses and the like.

In view of the above described situationjl have provided my improved small sanitary sump. pump, an object of which is to provide asmall sanitary sump pump of the kind mentioned that has a large pumping capacity'for .its size, one that is small and compact, one that is'inexpensive, one that has very few workingparts and therefore one that is sturdy, simple, long lived as well as one'zthat throughout theseveral figures of the drawings; Fig. ,1 is

a side view of the sumppump device, the lower portion of which is shown. in section for convenience. of. illustration. Fig. 2 is a detail vertical sectional view throughqone. of the external joints of the pump. i

Fig. 3;is a transverse detail sectionalviewthroughthe elevator section of'the pump, the view beingasseen from the line .3.3 in Fig. 2.and looking in the ,direction ofthe arrows.

In the drawings the device is shown.,as. having .asump ,well 10 which. is set or :buried in the :groundor concrete 11 to a pointsuch that the top -or.upper.edge, 12 ofthe .well .11 is substantially ,even withnthe surface.13 ofthe floor-14.

2,795,193 Patented June 11, 1957 "ice Thesump well 10 is covered with a sump well cover plate 15 the outer edge of which overlaps the upper edge of the wall of the sump Well It and the cover plate 15 is rigidly held in position over the sump .well It by means of-cap-screws 16 that slidably pass throughholes in the sump well'cover plate 15 and are threaded into or through an inwardly extending flange or ear elements 17 that are integrally formed on the inner and upper edge portion of the wall of the sump well 10.

. In thece nter of the cover plate 15 is a hole 18 bounded by'an-upturned flange element 19.

- A sewage tube20 is slidablypassed through thehole-18 and maybe held'in any suitable elevated position by any suitable means such as a set screw, not shown, that may be threaded through the flange 1910 bear against the "tube 20 forulocking purposes as will bereadily understood.

On the bottom end of the tube 20 is an intake cage-21 that flaresat itslower end to a much larger diameter than the tube =20and is held in an adjustedspaced away position from the bottom 10a of the sump well lit].

In the'lower opening of the cage 21 is an anti-friction bearing, preferably a tapered roller or ball bearing 22, thatis seated in a bearing holder 23 that is rigidly supported on the center vertical axis of the tube 2% and cage E21 by means of a cross support element 24 that is integral with both the bearing holder element 23 and the lower edge portion of the cage 21.

The s ide walls of the-sump wellltl taper inwardly from top to bottom so as to feed or crowd the material in the-sump wellltl toward the bottom opening of the cage 21.

The'sump well cover plate 15 is provided with a second jhole 25'therethrough that is bounded by an upwardly extending flange element 26, the'inner'wall surface-of which is threaded and one end of a ventpipe 27 is threaded 'thereinto for purposes of venting the sump pump well.

I he other end of the vent pipe 27 extends to the outside of the building in the same manner as does all plumbing vent pipes and for the same reasons.

Q nthe upper endof the pump pipe 269 isa four way pipe fitting 28. In one of the openings of the fitting 28 purposes of cleaning the drainage line 29 if and when needed.

The uppermost end of the four way fitting .28 .is

.formed as .asupport 31 for a power unit for driving the .pump. The power unit as shown is an electric motor 32 having support or attachment elements 33 that rest on theffitting support portion 31 and cap screws 34 slidably pass "through the motor support plate or element 33 and arethreaded into the fitting bind support formation 31 to I solidly hold the electric motorv 32 in the fitting 28 and in axial alignment with the pump tube 20. V

In the pump tube 29 is an anger 35 that is rigidly mounted on an anger shaft 36, the upper end of which is attached to or may even be an extension of the rotatable drive shaft of the motor 32. The lowerend of theauger shaft36 isseated in the inner race of the anti-friction bearing22; The anti-friction bearing 22 also serves as athrustbearingto support the pump shaft 36 and avoid longitudinal movements thereof.

. The device is further provided with an automatic float joperated electric switch, not shown, but that is contained ,ina box or. switch case 37, the switch has .an operating :.shaft,38 on. which is-rigidly mounted one-end of an operating.lever 39, the other'end of the operating lever 39 is posig, tioned between a pair of adjustably spaced apart stop, elements 40 and 41 that are adjustably and rigidly mounted on a push and pull rod42 and are ,engageable with the outer end of the switch operating lever 39 as the push and pull rod 42 moves up or down as will later be described. Rigidly mounted on the lower end of the push and pull rod 42 and contained within the sump well is afloat 43 for purposes of operating the electric switch as: will later be described .The push and pull rod 42 'slidably passes through a packing gland 44 carried by and passing through the sump-well cover plate for the purpose of sealing off any gas leakage from within the sump well 10.

The side wall of the sump well 10 is provided with an If the basement floor of the building is a considerable distance below the sewer line and the riseor distance from the sump well 10 to the discharge pipe 29 becomes too great, two difficulties will be encountered. First the auger 35 and its carrying shaft 36 will become too long and as the auger 35 and shaft 30 speedily revolve as. they will when they are revolvably driven by the motor -32, the auger and shaft 36 will begin to spring or whip in the tube 20 and in so doing the auger35 will strike the tube 20 and make quite an undesirable racket and also, in time at least, damage the auger 35.

Second, if the rise is high enough, the material in the tubc20 will begin to spin or revolve with the auger 35 and will therefore cease to rise in the tube 20 and ,be discharged therefrom through the discharge pipe 29.

Now, in view of these troubles I have provided tube and auger extension elements and couplings therefor.

The tube extension element consists of :an extension tube element 20:: and a tube coupling element 45, one end of which is threaded onto the upper end of the pump tube 20 and in the other end of the coupling is threaded the lower end of the pump tube extension element20a,

and on the other end of the pump tube extension 20a is positioned the four way fitting 28 the same as previously described asbeing on the upper end of the pump tube 20.

At the central portion of the coupling 45 is an inwardly extending support arm 46, one end of which is formed integral with the coupling element 45. On the other end of the support arm 46 is integrally formed a bearing support element 47 in which is seated a radial ball hearing assembly 48 and the inner bearing race of the bearing structure 48 is seated and carried by the upper end of the auger pump shaft 36, the upper end of which projects above the bearing structure 48 and is made multisided, preferably square, as indicated at 49.

In the pump tube extension 20a is a second auger 35a that is rigidly fixed on an auger extension shaft 36a. On the lower. end of the extension auger shaft 36a is formed a multisided socket 50 to match and in which is received and seated the upper multi-sided end 49of the lower auger pump shaft 36 which in turn supports the extension auger and auger shaft 36a against longitudinal movements thereof.

Attention is called to the fact that the cup or socket material from the sump well 10 to the discharge pipe" 29. Now as the sewage material passes from the sump,

pump tube 20 into the extension tube 20a.the sewage material will encounter the bearing support arm 46 which will serve to stop or at least decrease the spinning motion of the sewage material whereupon the extension auger 35:: will catch the de-motioned sewage material and then elevate the sewage material through the extension portion.

4, 20a-35a-36a of the device the same as it did, through the first pump tube section 20-35-36.

The one bearing support arm 46 is suflicient to support the. bearing structure 48 and itoffers just enough flow or spinning obstruction to the sewage material to insure good operation of the device as above described and yet the resistance is not enough that solid materials, paper and the like .will hang up on the support arm 46 and form a stoppage in the pump tube 20-2011.

The device operates as follows: Sewage material from the plumbing fixture will drain through the building sewage drainage pipes, not shown,1to and through the sump well intake opening 45 and into the sump well 10 and as the sewage and drainage material accumulates and the surface thereof rises in the sump well 10 the float 43 will float in the sewage and drainage material in the sump well and will rise and fall with the surface of the sewage and drainage material in the sump-well 10. As the float .43 is; raised with the rising of the sewage and drainage material in the sump-well 10 the push and pull rod 42 and the stops 40 and 41 thereonwill likewise be raised whereupon the stop 40 will engage the outer end of the electric switch operating arm 39 and rock the arm 39 to its raised position whereupon the electric switch in the switch case 37 has been operated to close the electric circuit in which is included the electric wires w, x, y and z to cause the electric motor 32 to run and spin the auger and auger shaft 35 -36 or 35--3635a-36a, as the case may be, whereupon the lower end of the auger 35 being submerged in thematerial in the sump well 10 and within the pump cage 21 and because of the speed with which the auger 35 is being turned the sewage and drainage material inside the cage 21 will be elevated through the pump tube 20 and discharged through the discharge pipe 29 at the top of the pump, tube 20 or 20a asthe case may be.

As the level of the material lowers in the process of emptying the sump-well 10 as just described, the float 43 would drop and the rod 42 will be lowered and rock the switch arm 39 to operate the electric switch to break the electric circuit and stop the electric motor 32 and the elevating pump angers. The electric motor 32 will again be started as the liquid level in the sump 10 raises and the float 43 and push rod 42 raises the switch arm 39 and the process is repeated.

While the device as shown and above described is probably the preferable form of the device his to be understood that such modifications of the device may be employed as lie within the scope of the appended claims without departing from the spirit and intention of the invention. Now having fully shown and described my invention ,what I claim is:

1. In a sanitary sump pump device of the kind described; said pump having a pump tube and anger therein, said pump, tube and anger structure being made in sections forpurposes of increasing and decreasing the material elevating distance of the pump, and coupling means for joining the pump tube elements, each to its succeeding section, means at the lower end of the lower pump tube section for revolvably supporting the auger section therein,

and a single inwardly extending support arm carried by .each pump tube coupling element for holding an antifriction bearing in a position centered on the center axis of the pump'tube assembly, an antifriction bearing, said antifriction bearing being held in said holder therefor, the upper end of each pump tube section and its respective auger pump shaft being revolvably carried in its respective antifriction bearing and extending thereabove, the upper extending auger pump shaft end being multisided,

the lower end of the succeeding auger pump shaft section having a socket thereon, said socket being multisided for receiving,and having the multisided end of the preceding auger pump shaft end fitted and seated therein.

2. In a sanitary sump pump device of the kind described; said pump having a pump tube and auger therein,

said pump, tube and auger structure being made in sections for purposes of increasing and decreasing the material elevating distance of the pump, and coupling means for joining the pump tube elements, each to its succeeding section, means at the lower end of the lower pump tube section for revolvably supporting the auger section therein, and a single inwardly extending support arm carried by each pump tube coupling element for holding an antifriction bearing in a position centered on the center axis of the pump tube assembly, an antifriction bearing, said anti- 10 friction bearing being held in said holder therefor, the upper end of each pump tube section respective auger pump shaft being revolvably carried in its respective antifriction bearing and extending thereabove, the upper extending auger pump shaft ends being multisided, the lower end of the succeeding auger pump shaft section having a socket thereon, said socket being multisided for receiving, and having the multisided end of the preceding auger pump shaft end fitted and seated therein, said support arm intermediate the said sump pump tube sections for engaging material passing through the sump pump tube sections to impede the spinning motion of the said material passing through the sump pump tube sections, said means for impeding the spinning motion of the material passing through the sump pump tube sections being the said bearing support element carried by the aforesaid coupling for the sump pump tube sections.

References Cited in the file of this patent UNITED STATES PATENTS 741,632 Crofutt Oct. 20, 1903 1,238,515 Hayes Aug. 28, 1917 1,245,806 Sears Nov. 6, 1917 1,271,836 Bennett July 9, 1918 1,383,380 Boggs July 5, 1921 1,494,875 Yeomans May 20, 1924 1,711,086 Dennison Apr. 30, 1929 1,785,480 Durdin, Jr Dec. 16, 1930 1,911,737 Allen May 30, 1933 2,676,666 Howe Apr. 27, 1954 

